Sharif Digital Repository

Nonlinear responses of unbalanced flexible rotating shaft passing through critical speeds

Author

Amirzadegan, S.

Publisher

Springer Science and Business Media B.V,

Pub. Year

2021

Subjects

Continuum mechanics. / Equations of motion. / Nonlinear equations. / Rotating machinery. / Speed. / Critical speed. / Non-linear response. / Nonlinear oscillation. / Passing through critical speed. / Rotating shaft. / Rotor systems. / Sommerfeld effect. / Unbalanced mass. / Von Karman. / Work study. / Finite element method.

On the quality of stability and bifurcation sets in rotors with permanent shaft bow on nonlinear supports

Author

Gavalas, I.

Pub. Year

2024

Subjects

Nonlinear dynamics. / Rotor dynamics. / Embedded systems. / Geometry. / Hopf bifurcation. / Stability. / Bifurcation. / Bifurcation set. / Complex geometries. / Critical speed. / Limit-cycle. / Numerical continuation. / Rotor-bearing system. / Rotors dynamics. / Shaft bow. / Stability and bifurcation. / Dynamics.

Nonlinear responses of unbalanced flexible rotating shaft passing through critical speeds

Author

Amirzadegan, S.

Publisher

Springer Science and Business Media B.V,

Pub. Year

2022

Subjects

Critical speeds. / Continuum mechanics. / Equations of motion. / Nonlinear equations. / Rotating machinery. / Speed. / Critical speed. / Non-linear response. / Nonlinear oscillation. / Passing through critical speed. / Rotating shaft. / Rotor systems. / Sommerfeld effect. / Unbalanced mass. / Von Karman. / Work study. / Finite element method.

A comprehensive continuum model for graphene in the framework of first strain gradient theory

Author

Mehralian, F.

Publisher

Springer Science and Business Media Deutschland GmbH,

Pub. Year

2021

Dynamic analysis of a dual rotor bearing system passing through critical speed

Author

Mehralian, F.

Publisher

SAGE Publications Inc,

Pub. Year

2023

Subjects

Dual rotor-bearing system. / Dynamic response. / Shaft bow. / Shaft crack. / Unbalanced mass.

Dynamic analysis of a dual rotor bearing system passing through critical speed

Author

Mehralian, F.

Pub. Year

2024

Subjects

Degrees of freedom (mechanics) / Dual rotor-bearing system. / Dual rotors. / Dynamics analysis. / Newmark-β method. / Passing through critical speed. / Rotor-bearing system. / Shaft bow. / Shaft crack. / Support parameters. / Unbalanced mass. / Dynamic response.

Molecular dynamics study on axial elastic modulus of carbon nanoropes

Author

Mehralian, F.

Publisher

Elsevier B.V,

Pub. Year

2019

Subjects

Axial elasticity modulus. / Carbon nanoropes. / Geometrical parameters. / Carbon. / Geometry. / Mechanical properties. / Molecular dynamics. / Elastic properties. / Elasticity moduli. / Helical structures. / Molecular dynamics (MDs) / Molecular dynamics simulations. / Nanoropes. / Non-monotonic variation. / Elastic moduli.

Effect of Support Parameters on the Vibrations of a Cracked Rotor Passing Through Critical Speed

Author

Mehralian, F.

Pub. Year

2024

Subjects

Dynamic response. / Rotordynamics. / Shaft crack. / Support parameters. / Cracked rotor. / Effect of supports. / Passing through critical speed. / Rotor response. / Rotor-bearing system. / Rotors dynamics. / Shaft crack. / Support parameters. / Transverse crack.

Elastic properties of vertically aligned carbon nanotubes: A molecular dynamics study

Author

Mehralian, F.

Publisher

Springer Verlag,

Pub. Year

2019

Moderating role of innovation culture in the relationship between organizational learning and innovation performance

Author

Ghasemzadeh, P.

Publisher

Emerald Group Publishing Ltd,

Pub. Year

2019

Subjects

Innovation culture. / Innovation performance. / Organizational learning. / Pharmaceutical industry.

A framework for developing business intelligence systems: a knowledge perspective

Author

Farzaneh, M.

Publisher

Emerald Group Publishing Ltd,

Pub. Year

2018

Subjects

BIS. / Information system development. / Knowledge management. / Qualitative research.

Stability assessment of bowed asymmetric rotors on nonlinear supports

Author

Mehralian, F.

Publisher

Springer Science and Business Media Deutschland GmbH,

Pub. Year

2022

Subjects

Dynamic response. / Nonlinear support. / Rotordynamics. / Shaft bow. / Stability. / Control nonlinearities. / Equations of motion. / System stability. / Time varying systems. / Asymmetric rotors. / Bearing support. / Common features. / Jeffcott rotors. / Rotating systems. / Rotor systems. / Rotors dynamics. / Stability assessment. / Anisotropy.

Effect of heating profile on desorption curve in temperature programmed desorption analysis: Case study of acid sites distribution of SAPO-34

Author

Izadbakhsh, A.

Pub. Year

2009

Subjects

Acidity. / Heating profile. / SAPO-34. / Stepwise. / TPD. / Acid site. / Acid sites distribution. / Acid strengths. / Desorption peaks. / Desorption signals. / Effect of temperature. / Hydroxyl groups. / Linear heating. / SAPO-34. / Stepwise. / Stepwise heating. / Temperature constant. / Temperature programmed desorption analysis. / TPD. / Acids. / Ammonia. / Gas adsorption. / Heating. / Molecular sieves. / Sieves. / Thermal effects. / Temperature programmed desorption.

Theoretical and experimental study of cascade solar stills

Author

Ziabari, F. B.

Pub. Year

2013

Subjects

Brackish water. / Cascade solar still. / Desalination. / Solar intensity.

Application of a continuous kinetic model for the hydrocracking of vacuum gas oil

Author

Arefi, A.

Pub. Year

2014

Subjects

Continuous lumping. / Hydrocracking. / Isomax. / Kinetics. / Vacuum gas oil. / Enzyme kinetics. / Kinetic theory. / Parameter estimation. / Petroleum refining. / Fixed bed reactor. / Kinetic modeling. / Optimization procedures. / Product distributions. / Weight fractions. / Residence time distribution.

An improved methodology for design of custom-made hip prostheses to be fabricated using additive manufacturing technologies

Author

Rahmati, S.

Publisher

Emerald,

Pub. Year

2012

Subjects

Manufacturing systems. / Rapid prototypes. / Total hip replacement. / Fill and fit. / Medical rapid prototyping. / Prosthetic devices. / Rapid prototype. / Total hip replacement (THR) / Arthroplasty. / Biomechanics. / Bone. / Computer aided design. / Computerized tomography. / Hip prostheses. / Hydraulic structures. / Image processing. / Investment casting. / Manufacture. / Rapid prototyping. / Restoration. / Technology. / Prosthetics.

Evaluation and enhancing of operational performance and training objective in accordance with Line Operations Safety Audit (LOSA)

Author

Khoshkhoo, R.

Pub. Year

2011

Real-time impulse noise suppression from images using an efficient weighted-average filtering

Author

Hosseini, H.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2015

Subjects

weighted-average filtering. / Image denoising. / Pixels. / Spurious signal noise. / Statistical methods. / Impulse detector. / Impulse noise suppression. / Interpolated images. / Real time. / Real-time application. / Relative positions. / Visual qualities. / Weighted averages. / Impulse noise.